Microsoft Word - 博物館紀要13.doc

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1 13 ( p.7786 Coral Reef Monitoring at Reef Flat Areas in Miyako Islands Hirokazu TOMORI and Kenji KAJIWARA (Reef Interpretation Society, Miyako Islands) pulchra@lime.ocn.ne.jp Abstract Coral reef monitoring using liner point intercept method at reef flat areas was carried out in Miyako Islands in At Shigira, south coast of Miyako Island, the coral coverage was 30.5% and the dominant lifeform of corals was multi-species mixed type. At Tsuma-biji, east coast of Ikema Island, the coverage of 26.5% and branching Acropora dominant type were found. At Aragusuku, southeastern coast of Miyako Island, coverage of 37.5% and Porites dominant type were found. It suggested that Zoanthus sp. (Anthozoa, Zoantharia) and Padina minor (Pheaophyta, Dictyotales) were potential competitors for coral communities at Shigira and Tsuma-biji, respectively. It considered that coral community of Aragusuku will maintain its current status for the time being. 1m

2 2004 (1967) (1992)(1994) (2003) 2 8m linear point intercept line transect belt transect linear point intercept (Nadon and Gtirling 2006) 2008 linear point intercept 2

linear point intercept 100m 50m20m 100m (0m) (99.5m)50cm 200 Faviidae Favia Favites Goniastrea 2008/5/17 11:30 12:10 24 43 06.3 N 125 20 41.9 E 24 43 05.5 N 125 20 38.

3 linear point intercept 100m 50m20m 100m (0m) (99.5m)50cm 200 Faviidae Favia Favites Goniastrea 2008/5/17 11:30 12: N E N E 2008/7/5 14:10 14: N E N E 2008/7/20 12:45 13: N E N E

4 55.0% 30.5% Acropora 13.0% Pavona 6.5% A. monticulosa Montipora PocilloporaPorites Platygyra 5% Zoanthus 9.0%Halimeda opuntia 5.5% 13.0% 42.6% 20m 40 6, 2, 3, 8, 7 12, 13, 9, 15, 12 2 p 0.272, Acanthaster planci 4

5 64.0% (57.5%) 26.5% 18.5%16.0% 2.5%3.5% 2.5% 1.0% 3.5% 0.5% (2006) 9.5% Padina minor 8.5%Tricleocarpa cylindrica 1.0% 1cm 18.0% 60.4% 20m 7, 7, 11, 2, 4 2 p m 86.5m 9.5m 74m 20m 10% 1% 5

6 53.5% 22.5% 20.0% 11.0% 10cm 2m 37.5% Prites cylindrica 17.5%10.0% 7.5%Pocillopora damicornis Galaxea fascicularisfuiga sp. Millepora exaesa Zostera japonica % 46.7% 27.5%, 73.3% 20m 4, 2, 6, 17, 6 15, 9, 6, 19, 6 2 p m 60cm 6

7 30.5% 13.0% (30.5%) (13.0%) 42.6%(2006) 60% 60% 50m (p=0.272) 2 p= cm 1m 50m 50m 30% 9.0% 28.9% 20.0% 7

8 6.5% 55.0% 26.5% 18.5% 16.0% 60.4% 2 p= cm Acropora aspera A. pulchra 5cm 8

9 3cm 37.5% 17.5% 10.0% 46.7% 73.3% m 60.0m 79.5m 21.0%22.5% 9

10 (Harriott 1985) (Moran 1990) (Massel and Done 1993)mm (Klein and Loya 1991) (1994) % 50100% (1994) 5%550%50100% (1994) (1994)50100% 37.5% 50% (1994) 550% 550% 50100% 30.5% 26.5% 37.5% 10

11 % 1998, 2000, 2001, 2003, 2005, , 2007 (1994)

12 Harriott VJ (1985) Mortality rates of scleractinian corals before and during a mass bleaching event. Mar. Ecol. Prog. Ser. 21: (2003) 37pp. (1994) 262pp. (2006) pp. (2004) pp Klein R, Loya Y (1991) Skeletal growth and density patterns of two Porites corals from the Gulf of Eilat, Red Sea. Mar. Ecol. Prog. Ser. 77: Massel SR, Done TJ (1993) Effects of cyclone waves on massive coral assemblages on the Great Barrier Reef: meteorology, hydrodynamics and demography. Coral Reefs 12(3/4): (1992) 80pp. (2008) 16pp. Moran PJ (1990) Acanthaster planci (L.): biographical data. Coral Reefs 9(3): Nadon MO, Gtirling G (2006) Field and simulation analysis of visual methods for sampling coral cover. Coral Reefs 25(2): (1992) pp (1967) pp , 17pls. 12

Coral Reefs of Japan

Coral Reefs of Japan 6-2-5 06 120 45km 23km 1970 1970 98 Veron 1992a, c Veron 1995 94 1994 ha ha 1994 Cyphastrea serailia Acropora solitaryensis Favia speciosa Mycedium elephantotus Favites abdita Porites heronensis Hydonophora